The UFC 173 pay-per-view on May 24th in Las Vegas as a new main event as Renan Barao will defend the bantamweight title against T.J. Dillashaw. 
UFC President Dana White announced the new fight booking to MMA Junkie on late Thursday evening.
UFC 173 will come from the MGM Grand Garden Arena on May 24th and tickets will go on sale shortly.
Barao (32-1, 1NC) will be facing a Team Alpha Male fighter for the second straight fight as he is coming off a first round victory against Urijah Faber at UFC 169. His last three wins have come by stoppage and this will mark the third time he has been the main event of a pay-per-view card.
Dillashaw (9-2) has won five of his six fights since losing to John Dodson in the Ultimate Fighter 14 Finale and is coming off a win against Mike Easton. He was already scheduled to be on the UFC 173 card against Takeya Mizugaki and a new opponent for Mizugaki will be announced soon.
The current UFC 173: Barao vs. Dillashaw card is below.
Main Card: (PPV – 10 p.m. ET/7 p.m. PT)
Renan Barao (32-1, 1NC) vs. T.J. Dillashaw (9-2)
Junior dos Santos (16-3) vs. Stipe Miocic (11-1)
Takeya Mizugaki (19-7-2) vs. TBA
Tony Ferguson (14-3) vs. Katsunori Kikuno (22-5-2)
Jamie Varner (21-9-1 2NC) vs. James Krause (20-5)
Preliminary Card: (Fox Sports 1 – 8 p.m. ET/5 p.m. PT)
Michael Chiesa (10-1) vs. Francisco Trinaldo (14-3)
Chris Holdsworth (5-0) vs. Kyung Ho Kang (12-7, 1NC)
Al Iaquinta (8-2-1) vs. Mitch Clarke (10-2)
Anthony Njokunai (16-7, 1NC) vs. Vinc Pichel (8-1)
Preliminary Card: (Fight Pass – 6:30 p.m. ET/3:30 p.m. PT)
Yves Edwards (42-20-1, 1NC) vs. Piotr Hallmann (14-2)
Sam Sicilia (12-4) vs. Doo Ho Choi (11-1)
Jingliang Li (8-2) vs. Danny Mitchell (14-5-1)